Hi, I have this problem too, I stretched green pea netting over the trellis (almost invisible) and planted Clematis, the netting stops the flowers from growing through and facing my neighbours sunnier side. Taylors Clematis have a huge range and you can search by height, aspect, flowering period and colour, some are evergreen

Well Ashleigh2 I am very keen on clematis! We used to have a C. cirrhosa freckles at our old house - a bargain purchase of £1.50 from Morrisons of all places, and it was lovely - beautiful, prolific and evergreen. I had pencilled that in for our trellis here, as I knew it is winter flowering, so we probably wouldnt have any problems with it turning away from our view. Thanks

Hydrangea petiolaris is ideal for that aspect (evergreen) I always feel it's better suited to a wall, but many people grow it on a fence. White clusters of flowers. Some of the Honeysuckles will grow in shady aspects too. Don't overlook some shrubs which will grow happily against a fence too, if you have enough room. Chaenomoles (Quince) will be happy in that aspect and will grow against a fence quite neatly. They're deciduous, spring flowering - orangey/reds and a white one as well. Many of the Euonymous will do the same - placed against walls and fences they'll grow up rather than out, and are evergreen.